Rotary pump.



A. BORRAS L F. IRIARTE.

ROTARY PUMP,

APPLICATION FILED MAR. l. |916.V

1,241,704. Patented oct. 2,1917.

2 SHEETS-SHEET I.

A. BORRAS & F. IRIARTE.

ROTARY PUMP.

APPucATmN msn MAH. 1. 1916.

1,241,704. Patented oct. 2, 1911.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

AN TONIO BORRS AND FERNANDO IRIARTE, 0F BUENOS AIRES, ARGENTINA.

ROTARY PUMP.

Application led March 1, 1916.

To all 'whom t may concern.'

Be it known that we, ANTONIO Bonas and FERNANDO IRIARTE, citizens of the Iiepublics of Portugal and Argentina, respectively, and both residents of the city of Buenos Aires, Argentina, have invente-d certain new land useful Improvements in Rotary Pumps, of which the following is a specification. y

The invention relates to an improvement in rotary pumps and has as its object the provision of such device which will be eilicient, of great power and capable of easy reversibility.

In the following we have described, in connection with the accompanying drawings, a device illustrating one way of carry` ing out our invention, the features thereof being hereinafter more particularly set forth in the claims.

In the drawings Figure 1 is a longitudi` nal, vertical, sectional View of one form of our invention and Fig. 2 is a vertical cross sectional view of the same along the line A-B of Fig. 1.

Similar numerals of reference indicate similar parts throughout the several views.

1 indicates a fixed shaft eccentrically mounted in brackets 2, 2 with reference to casing 3. at, 4 indicate plates forming the top and bottom of the casing. 5 and 6 indicate the end walls of the inner chamber rotatably mounted in ball-bearings 7 and 8 respectively in the casing 3 and eccentric to shaft 1. 9 indicates a pulley carried by end wall 6 adapted to be driven by a belt from any suitable source of power (not shown). 10 indicates a frame bolted to end walls 5 and 6. Frame 10 is shown as provided with a plurality of tubular chambers 1l, 11, here shown as twenty four in number, in sets of three across the face of the frame 10 and in sets of eight circumferentially thereof. Each of said chambers 11 is provided with a plunger 12, each plunger excepting one being pivotally connected to a connecting rod 13 in turn pivotally connected at its other end to a plate or socket 14 revolubly mounted on shaft 1. The remaining plunger or set of plungers is pivotally connected to an arm l5 integral with or ixedly connected to plate or socket 14. We have shown the connecting rods 13 for each set of three plungers extending in parallel across the face of the frame 10 as brought together to a common pivotal point Specification of Letters Patent.

Patented Oct. 2, 1917.

serial No. 81,319.

on plate or socket 1li (Fig. 2), se that all the plungers of each set will operate in unison. Connecting rods 15 are similarly brought to a common point on plate or socket l-il. 16, 1G indicate shutters or vanes extending cross the face of the frame and each adapted to completely cover one set of tubular chambers 11. Shutters 16 are carried by rockable shafts 17 journaled in cas` ing 3 and carrying crank arms 18 at one end. Crank arms 1S are connected by a link 19. Handle or lever 2() is mounted on one of shafts 17 and is adapted to rock the other shaft 17 through crank arms 18 and link 19 so as to rock shutters 1G to cause them to assume the position shown in Fig. 1 or the opposite thereof. Shutters 16 are shaped .to conform to the periphery of frame 10 so that when in the position shown in Fig. 1 in connection with shoulders 21 in wall 3 they will act as a closure against water or other fluid returning from discharge 22 to inlet 23.

It will be noted that the passage 23 extends about the openings of but three of the circularly arranged cylinders or tubular chambers 11, said three cylinders being less than one-half of the total eight cylinders arranged circularly and peripherally within the frame 10, whereas ythe passage 22 extends about the openings of the remaining five cylinders or tubular chambers 11. It will also be noted that each shutter extends from the effective inner opening of said passage 23 to a point within'the said passage 22 for a distance O'reater than the diameter of a single cylinder or inner chamber 11. Accordingly, when the shutters 16 are rocked by handle 20 in the opposite direction, the effective inner opening is reduced from tive to three, thereby causing a reverse flow, the discharge 22 then becoming the inlet and inlet 23 then becoming the discharge.

24k is an arm rigidly mounted on lower rock shaft 17 and adapted to be pinned to the casing 3 by pin 25.

In the operation of the device assuming the inner chamber including the frame 10 to be driven clockwise, the uppermost set of plunger-s are shown as at the limit of their outstroke, the next set to the right just beginning the instroke, the next to the right a little farther on the instroke and so on, the lowermost set of plungers being at the limit of the instroke, the next set to the left just beginning the outstroke and so on, the Water or lfluid being sucked in as the plun'gers cross lthe inlet, carried past the lloiverinost shutter 16 and discharged as the plungers pass the discharge, no Water o'r iiuidbeing able to return to the inlet because of the closure of shutters 16 against their respective shoulders 21. The shutter v16 having 7 been shifted to the opposite position to that shown and the direction of rotaton of the inner chamber and frame 10 being reversed, the reverse operation is obvious, the Water or other `fluid in the now discharge end (formerly the linlet end) being incapable of returning because ofthe closure of the shutters -16 against the casing 3 and the face of frame 10.

By lthe means described We are enabled toobtain a' greater pressure of air, steam or liquid With an expenditure of less power than heretofore and particularly because of the greater leverage gained by the relatively veccentric position of the shaft to the inner-chamber, or frame, and casing.

It isobvious that the apparatus may be driven by'the shaft instead of from a pulley. on the Wall of the inner chamber as shown, in which case the plate or socket 14 would be pinned to the shaft instead of rotating around the sameand We do not restrict ourselves to the eXact arrangement shown, further than the scope of the appended claims demands, because the eccentricrelationship is the important factor 'Whether :the inner chamber or `frame is driven directly by a belt or indirectly through the shaft.

1. yIn a rotarypump, an outer casing, an inner casing, a predetermined lnumber of cylinders arranged-peripherally Within said inner casing, a shaft eccentric relative to said inner casing, plungers disposed Within said cylinders, connecting rods fastened at'one end'to said plungers and concentrie ond named passage having a length greater than the diameter of one of'said cylinders.

2. In' a rotary pump, an outer casing, an inner casing, fa-shaft disposed eccentrically relativeto said inner casing, a socket on Vsaid shaft, a predetermined number of cylinders arranged peripheially Within said inner casing, a plurality of plungers-disposed vvithin `said cylinders, connecting rods for the plungers fastened at one end tovthe respec tive plungers and fastened at the other end to a common point on said socket, said connecting rods'being arranged concentrically about said shaft, means for rotating said inner casing, a passage' having an effective inner opening embracing a number of lthe openings of said cylinders. less than one half said predetermined number of cylinders, apassage arranged oppositely to said passage` andextending over the openings of i the remainder of said/predetermined num,- ber of cylinders, oppositely arranged ele'- ments movable Within saidv second named passage eachliaving-a lengt-hgreater than y the diameter of one of said cylinders, and common ineansfor' operating said elements. In testimony Whereofvve have signed this specification.

ANTONIO4 Bonniis. FERNANDO IRIARTE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, '.D. C. 

